Extensible offset caster construction



Feb 28, 19334 c. a. NOELTING ET AL 1,899,394

Ex'rss-IBLE OFFSET .cAsTER vcoNsTRUCnoN ATTORNEY- Filed Aug. 17, 1951 of the bottom end as illustrated in Figure 1. As,V a result of the foregoing construction, there is mutual cooperation between the bar vand the leg mount so that the bar does not rotate inthe openingll and, therefore, all

Y of the transverse apertures 17, 19 and 20 valways llie in substantially the Vsame plane. Therefore, the only locating adjustmentfor Piu usertonis .a longitudinal adjustment. singe, in the telescopic movement of the bar, eachA of theopenings 17 successively register with the aligned transverse vapertures 19 and 20. f

In the lowerportion' ofy Figureol there `is illustrated a caster wheel 26 mounted upon theaxle27 carried by the ears 28 ofthe yoke which is swivelly mounted in the'socket member 29. 'Ihe socket member `29V is herein shown threaded and includes a laterally-dil I. rected bottomflange() which has an exterior portion arranged for tool engagement, such as a wrench or the like, and herein such peripheral outline is hexagonal. The exteriorly threaded Asocket-forming member 29 projects through the opening 31 formed in one kend of an offset member 32 andthe projecting upperl end mounts a suitable cap nut 33. The opening 31 may be circular and, when circular, a wrenchholdingthe `socket through engagement with the portion and another wrench engaging the cap nuto33 serves to rigidly mount the socket'inoand upon the offsettingl bar o r plate 32'. Plate 32 in the otherend as at34, receives the lower end 35 of the .bar 16 and herein the Same havea relatively fixed relationshipfand are rigidly secured together in such ,fixed releteushp. by the piu 36 which may be of tapered character and relatively permanently secured thereto. Since thevertical bar 16 is preventedfrom rotating inthe leg andsince the offset bar 32 has a fixed relation thereto,

itwill be apparent thatthe axis ofL the socket be offset from the axis of theleg and' in. u ued` relation Se that-for hospital, Ybeds audi the like, Where extensibility shishly desirable .Suid ousettue permits the casteritself to .be positioned within the Aprojected Y area of the bed so that the offset' caster does o use and thus will not bethe causeofi tr'ippin not project beyond the offset area when in thenurses and others movi-11g about the bed` F InFigure 3 a modified form oftheinvention is illustrated which is substantially similar to that previously set forth and, in this form of the invention, similar parts bear-numerals of the one Vhundred series.V The bar iskindicatedfbythe numeral 1:16; the bodyof leg mount by the Vnumeral 112 ;A the; pin by the numeral 121, the gripping portion `bythe numeral 122, the plate of the leg mount by the numerall-l; the collar bythe numeral 115and herein it is provided with an in- Y wardlydirected tongue123 which rides in a lungit,udma 1. groove 01 karwei; 125 farmed `iu .the bar 116. Functionally, this form of the invention is the full equivalent of that shown in Fi re .2.

In t igs. 4 and 5 a further modified form of the invention is illustrated. In these figures, 210-indicates the leg-216l the bar or rod in the bore 211. The leg above the cup is laterallyapertured as at 219 and mounted thereu are `bushings 220 which receive the piu 22.1 chata-1S@ passes through opening 217` iu the bar. The cup 212 includes the ,bottom 213 having theaperture 214 therein, said aperture having `v`the' inwardly directed tongue or .flilllled -portion224, The cup is secured to the legby suitable meansextending laterally, or, if desredlougtudnally into the leg. Herein lateral screws 250 are illustrated extend-` ing vthrolllgh @up apertures 2531.

In Fig. Gthe cup includes the inwardly and upwardly dished base 3,13 having the central opening defined by the circular wall 314 which is` flattened at 324 for the purpose Set forth. i The cup includes side wall 312 with aligned apertures l320e and 3202 the latter being larger than the former.. The pin 321 includes a head S21-aand the threaded oppo- Y across the same,and a pin retainer positioned in the body and leg apertures and in one of the member apertures for adjustably mounting` the leg and member. o 2.111 combination,` a tubular leg, a leg mount on the'lower end thereof and including an upwardly-.directed body wall of appreciable height and enveloping the exterior of the; leg and a plate portion having an aperture registering with the hollow portion` of g theleg,'an extension member slidably mounted in the hollow ofl the leg, said member in- Y cluding a plurality ofl spaced transverse aperture'stherethrough, said body and body-enclosed portion of thelegff including registering transverse apertures extending entirely across the same, a pinretai'ner positioned in the body and legapertures and inone of the member apertures for adjustably mounting the leg and member,n said leg mount and said member having cooperative portions preventing relative rotationof the member in thlg mount,4 and au offset caster carried; by the leg-exposed end' of thel member` and in preciable height and.' envelopingtthe exterior ofthe leg anda vplate portion having an apelft f:

, the leg and member, said leg mount and' said f niember'ehaving V"co-operative portionsspre- 2e predetermined fixed ofsetepositionrelative to,A the leg.` A ,y j y 'Y 3. In combination, a tubular yleg,ya :leg

mount. on the lower 'end ythereof and includv ing an upwardly-directed body.w'allv of ,fapr venting relative rotation ofthe memberin the legmount,'an offset caster/carried by' thev leg-exposed end of kthe memberand in predetermined liXed oi'set `po'sitionrelative"to the, leg, said offset caster yincluding aswivelling caster, and a Ytransverse support rigidly ser-fl cured at one end to the -leg-exposedend of the member and its oppositeend supporting said caster. n f` .e Y. 4. I n combination, a tubular leg, a leg mount upon the lower end therof and including an upwardly-directedbody wally of apprecable height andv enveloping thefexterior of the leg and a plate portionhaving any aperture registering with'ythe hollow portion. of

the leg, kan extension member slidablyrmount-v Y ed in the hollow of thel'eg, said memberin- Y tension member including a longitudinalipor-j.A

cluding a plurality of spaced transversetaper`4v tures therethrough, said f body yand body-enclosed portion of the leg kincluding registering transverse apertures extendingentirely across the same, andY a pin retainer positioned-in the `body and leg apertures and in one ofl the..

ja wal the leg tension kmember including a longitudinal portioncooperating therewith for preventing and member, said` leg mount having defininglits first-mentioned apertureI and a portion extending inwardly, said ex-` t low legia'tcaster, and a laterally-positioned 'i member carriedxby the legfexposed end of .the41 v f f extension member and supporting said caster, j

in onset relation to said extension member.

6. In combination, tubular leg,a yleg mountI upon the lower end thereof and. in-- cludil'ig fan upwardly-directed body wall of appreciable heightv and enveloping the exterior of the leg and a'plate yportionhaving an yaperture registering with the hollow portion of the leg,an extension member slidably *mounted* in the hollow'ofthe leg, said membery j v Vincluding a pluralityof spaced transverse apertures therethrough, said body andbodyV enclosed portion of the leg including registers ing transverse apertures extending entirely 1 across'r the same, a pin retainer positioned in the body and ,leg yapertures and in one'of the member Vapertures for adjustably mounting the leg and member, said leg mount and ysaid t .'memberhaving a cooperating connection per-` mitting relative longitudinal movement and Y preventing'relative rotative movement therebetween for aperture-locating purposes. f

lIn witness whereof, we'have hereunto af-l f fixedfour signatures., Y t f :CLARENCE B.IIYOIEIIIIIYGLl i WILLIAM NOELTINGr.k E

member apertures for adjustably mo`u nting- I the leg and member, said leg `fniount having a wall defining its-tirst-mentioned "aperture, l

and aportion extending inwardlysaid yeX- tion cooperating therewithffor preventing rotation ofthe eXtensionimemberin the hol- Y i.

low leg."l v v u.' .nV f,

5. In combination, a"tubularj1eg,"`a leg mount upon the ylowerfend thereof and jinappreciable heightV and-#enveloping `the `1er,-`

teriorof the leg and a; plate portion havingk f i Y an aperture registeringwiththe hollow pore y "cludingan upwardlydirected,.bodywall of i tion of the leg, an extension-member slida'bly. mountedV in the hollow of thev leg, said member including a plurality of,spacedftransverse apertures therethrough,'saidfbody and body-vr y enclosed portion ofthelegincludingregister- Y ing transverse' apertures, extending entirely f.

Vacross the same, a pin retainer positioned in V- the body and leg apertures and in one of the v member apertures v for adjustably mounting 7o n rotation of the extensionhmember in the .hol-,t 

